package com.atguigu.lease.web.app.service.impl;


import com.aliyun.dysmsapi20170525.Client;
import com.aliyun.dysmsapi20170525.models.SendSmsRequest;
import com.atguigu.lease.common.exceptions.LeaseException;
import com.atguigu.lease.common.jwts.JwtUtil;
import com.atguigu.lease.common.redis.RedisConstant;
import com.atguigu.lease.common.result.ResultCodeEnum;
import com.atguigu.lease.model.entity.UserInfo;
import com.atguigu.lease.model.enums.BaseStatus;
import com.atguigu.lease.web.app.service.LoginService;
import com.atguigu.lease.web.app.service.UserInfoService;
import com.atguigu.lease.web.app.vo.user.LoginVo;
import com.atguigu.lease.web.app.vo.user.UserInfoVo;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import io.jsonwebtoken.Claims;
import org.apache.commons.lang3.ObjectUtils;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Service;

import java.util.Random;
import java.util.concurrent.TimeUnit;

@Service
public class LoginServiceImpl implements LoginService {
    @Autowired
    private Client client;

    @Autowired
    private RedisTemplate redisTemplate;

    @Autowired
    private UserInfoService userInfoService;

    @Override
    public void sendCode(String phone) throws Exception {
        String key = RedisConstant.APP_LOGIN_PREFIX + phone;
        //根据手机号先获取是否存在
        Boolean hasKey = redisTemplate.hasKey(key);
        if (hasKey) {
            //有，没过期不能发送
            throw new LeaseException(ResultCodeEnum.APP_SEND_SMS_TOO_OFTEN);
        }
        //不存在，生成6位数字随机验证码
        Random random = new Random();
        Integer code = 100000 + random.nextInt(900000);
        //发送短信验证码
        SendSmsRequest smsRequest = new SendSmsRequest();
        smsRequest.setPhoneNumbers(phone);
        smsRequest.setSignName("阿里云短信测试");
        smsRequest.setTemplateCode("SMS_154950909");
        smsRequest.setTemplateParam("{\"code\":\"" + code + "\"}\n");
        client.sendSms(smsRequest);
        //将数字和手机号保存到redis
        redisTemplate.opsForValue().set(key,code.toString(),86400, TimeUnit.SECONDS);
    }

    @Override
    public String login(LoginVo loginVo) {
        //判断手机号和验证码是否为空
        if (ObjectUtils.isEmpty(loginVo.getPhone())) {
            throw new LeaseException(ResultCodeEnum.APP_LOGIN_PHONE_EMPTY);
        }
        if (ObjectUtils.isEmpty(loginVo.getCode())) {
            throw new LeaseException(ResultCodeEnum.APP_LOGIN_CODE_EMPTY);
        }

        //校验验证码
        String key = RedisConstant.APP_LOGIN_PREFIX + loginVo.getPhone();
        String code = (String) redisTemplate.opsForValue().get(key);
        if (code == null) {
            throw new LeaseException(ResultCodeEnum.APP_LOGIN_CODE_EXPIRED);
        }
        if (!code.equals(loginVo.getCode())) {
            throw new LeaseException(ResultCodeEnum.APP_LOGIN_CODE_ERROR);
        }

        //判断用户是否存在，不存在则注册
        LambdaQueryWrapper<UserInfo> userInfoLambdaQueryWrapper = new LambdaQueryWrapper<>();
        userInfoLambdaQueryWrapper.eq(UserInfo::getPhone,loginVo.getPhone());
        UserInfo userInfo = userInfoService.getOne(userInfoLambdaQueryWrapper);
        if (userInfo == null) {
            userInfo = new UserInfo();
            userInfo.setPhone(loginVo.getPhone());
            userInfo.setStatus(BaseStatus.ENABLE);
            userInfo.setNickname("佚名" + loginVo.getPhone().substring(5));
            userInfoService.save(userInfo);
        }

        //判断用户是否被禁
        if (userInfo.getStatus().equals(BaseStatus.DISABLE)) {
            throw new LeaseException(ResultCodeEnum.APP_ACCOUNT_DISABLED_ERROR);
        }

        //创建并返回Token
        return JwtUtil.createToken(userInfo.getId(),loginVo.getPhone());
    }

    @Override
    public UserInfoVo getUserInfoId(String accessToken) {
        Claims claims = JwtUtil.parseToken(accessToken);
        Integer userId = (Integer) claims.get("userId");
        UserInfo userInfo = userInfoService.getById(userId);
        return new UserInfoVo(userInfo.getNickname(),userInfo.getAvatarUrl());
    }
}
